JPH02195926A - Vacuum cleaner - Google Patents

Abstract

PURPOSE:To improve the running stability of a cleaner main body by forming a rotation stopping mechanism stopping the rotation between the cleaner main body and a wheel bed with at least one caster at the position opposite to a hose fitting port. CONSTITUTION:A wheel bed 10 is fixed to the lower case 1b of a cleaner main body 1 from the lower side of a rotary shaft 9 by screws via washers and can be rotated centering the rotary shaft 9, when it is rotated about 360 deg., a stopper 25a protruded on the outer periphery of the lower case 1b collides with a stopper 25b protruded on the inner face of a wheel bed 10, and its rotation is suppressed. It can be rotated 360 deg. to the right and 360 deg. to the left. The stopper 25b is formed at the position apart from the running lines of wheels 24, and the stopper 25a and the stopper 25b are formed so that the rotation of the cleaner main body 1 against the wheel bed 10 is suppressed while the hose fitting port 20 and one of casters 8 are located on opposite positions across the rotary shaft 9. The cleaner main body is hardly tumbled backward, and stable running is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a vacuum cleaner, and more particularly to a vacuum cleaner suitable for improving the running stability of the vacuum cleaner body.

[Conventional technology]

With conventional vacuum cleaners, when changing direction or cleaning high places such as ceilings or lintels, the vacuum cleaner itself could not follow the movement of the hose properly and would fall over.

Conventional ideas to improve these problems include making the hose freely rotate 360 degrees on the top of the vacuum cleaner body, and
There was an example of rotating the vacuum cleaner itself, as seen in No. 421.

[Problem to be solved by the invention]

With the above conventional technology, when changing the direction of a vacuum cleaner on a thick carpet, the wheels and casters sink deeply into the carpet and the axle does not operate properly when changing direction, resulting in the vacuum cleaner falling over when it is pulled from behind. Was.

An object of the present invention is to provide a vacuum cleaner whose main body has good running stability.

[Means to solve the problem]

The above purpose is to provide a vacuum cleaner body which has a built-in dust collector and an electric blower for storing a filter, and has a hose attachment port formed in the front part, and a wheel stand on which the vacuum cleaner body is rotatably mounted.
In a vacuum cleaner equipped with a plurality of casters that rotate the axle base and move it over the surface to be cleaned, the hose attachment port and one of the casters are in opposite positions with the center of rotation in between. This is achieved by providing a stopper that suppresses the rotation of the cleaner body relative to the wheel stand.

[Effect]

If the hose attachment port and the caster are at opposite positions across the center of rotation, and the vacuum cleaner body is configured to suppress rotation relative to the wheel base, the vacuum cleaner body can connect the shaft of one caster via the hose. Because it is pulled backwards as a fulcrum,
The ability to turn backwards becomes unstable, and the vacuum cleaner body can easily turn and turn backwards. Please note that the hose installation [
1 and the casters are not on the line between the center of rotation,
Since the rotation of the vacuum cleaner body relative to the axle base is not suppressed,
Direction changes can be made easily and driving stability is not impaired.

〔Example〕

An embodiment of the vacuum cleaner of the present invention will be described below with reference to the drawings. The vacuum cleaner main body 1 consists of a dust collection part 6 having an electric blower 2°, a cord reel 42 wrapped with a power cord 3, and a paper bag filter 5 inside, and the dust-free part 6 is provided with a dust collection lid 7. The vacuum cleaner main body 1 consists of a hemispherical upper case 1a and a lower case lb. The vacuum cleaner body 1 has casters 8 extending from the vacuum cleaner body 1 and mounted on all sides, and a wheel base 10 that can rotate with respect to the vacuum cleaner body 1 via a rotation shaft 9.
It is equipped with

To further explain each part, the electric blower 2 includes a vibration-proof rubber 1
1.12, it is held in the vacuum cleaner body 1 so as to be gripped from both sides. A sound absorbing cover 13 is placed around the electric blower 2.
．． A sound insulating wall 14 is provided.

A sound deadening tube 15 is integrally formed with the sound insulating wall 14.

The dust collection section 6 includes an inner case 16 that contacts the vibration-proof rubber 12 on the front side of the electric blower 2. A filter material is stretched inside the inner case 16, and
An after filter 17 formed in a box shape is attached.

The paper bag filter 5 can be set inside the after filter 17. After filter 1
An airtight packing 18 is provided around the opening 7. The airtight gasket 18 is configured to come into contact with the open end of the inner case 16 and the back M18 of the collecting lid 7 to keep the dust collecting section 6 airtight. Also.

The dust collection lid 7 is provided with a hose attachment port 20 to which a hose 19 can be detachably attached. Attachment and detachment of the paper bag filter 5 is performed by releasing the clamp 21 and opening and closing the dust collector M7.

On the top of the vacuum cleaner body 1, there is a carrying handle 22 and a DAS! that displays the amount of clogging of the filter. - A meter 23 is provided. A plurality of wheels 24 are attached to the bottom surface of the cleaner body 1, and come into contact with the inner surface of the wheel base 10 to make the rotation of the cleaner body 1 and the axle base 10 smooth. Further, an elastic material 24a is also provided on the outer periphery of the wheel 24 so as to reduce running noise.

The wheel stand 10 is connected to the lower case 1b of the vacuum cleaner main body 1 and the rotating shaft 9.
It is fixed from the bottom with a screw through a washer.
It can be rotated around the rotation axis 9.

! 11g When the lower rotary shaft 1b is rotated 360 degrees, the lower rotary shaft 1b has a stopper 25b formed protruding from the inner surface of the m-axis base 10, and its rotation is suppressed. That is, it can be rotated 360 degrees to the right and 360 degrees to the left.

Note that the stopper 25b is formed at a position away from the travel line of the axle 24, and is in contact with the stopper 25a!・Brim 25b
is formed so that rotation of the cleaner main body 1 with respect to the wheel base 10 is inhibited when the hose attachment port 20 and one of the casters 8 are in opposite positions with the rotating shaft 9 interposed therebetween. The stoppers may be formed on the side walls of the lower case 1b and the wheel platform 10.

Further, the wheel platform 10 is configured to have a substantially circular shape when viewed from above.

The casters 8 are provided so as to protrude from the outer shape of the cleaner body 1. A caster cover 26 is provided on the wheel stand 10 so as to cover the casters 8. Caster cover 26
A bumper 27 is provided on the outer periphery of the wheel base 10 to prevent damage to furniture and the like. This bumper 27 constitutes the outermost shape of the cleaner body 1.

An exhaust port 28 and a power cord outlet 29 are provided on the rear side of the cleaner body 1.

In the above configuration, when using the vacuum cleaner, the hose 19° extension tube 30.
Connect the suction port 31, pull out the power cord 3 from the cord outlet 29, and insert it into an outlet (not shown).

Next, when the operation switch 32 at the end of the hose 19 is turned on, the electric blower 2 is operated, and the suction force causes air flow containing a large amount of dust to flow from the suction port 31 to the extension pipe 30. After passing through the hose 19 and entering the dust collecting section 6, the paper bag filter 5 separates the dust and clean air, and only the clean air flow is sent to the electric blower 2. It passes through the muffler 15 and is discharged from the exhaust port 28 at the rear. When the room is cleaned in this state, even if the wheel stand 10 or the caster cover 26 hits an obstacle 33 such as furniture placed in one room, the bumper 27 protects the furniture and prevents damage to the furniture.

Furthermore, in this vacuum cleaner, since the main body 1 of the vacuum cleaner can rotate on the wheel base 10, the direction of the hose 19 can be easily changed in a narrow room, etc., and the direction can be changed by the casters 8 on the surface to be cleaned. Since the vacuum cleaner is rotated by the wheels 24 between the wheel stand 10 and the cleaner main body 1, it can be easily operated on the surface to be cleaned without being affected by the rotation. Conversely, even if the caster cover 26 or the like gets caught on the legs of a table or the like as shown in FIG. You can move the vacuum cleaner smoothly even in rooms with a lot of furniture.

In addition, the vacuum cleaner main body 1 and the wheel stand 10 have a hose attachment port 20
The power cord 3 can be prevented from endlessly winding around the wheel stand 10, and excessive tension can be prevented from being applied to the power plug or cord.

By the way, when the rotation of the cleaner main body 1 with respect to the wheel base 10 is suppressed with the two casters 8 at the rear and in substantially symmetrical positions with respect to the imaginary line connecting the hose attachment port 20 and the rotating shaft 9. When the hose 19 is pulled upward to change direction on a long-pile carpet or to clean the ceiling or lintel, the vacuum cleaner body 1 rotates stably around the shafts of the two casters. Because of the movement, it is easy to fall backwards. However, if the configuration is such that at least one caster is arranged on the virtual line connecting the hose attachment port 20 and the rotating shaft 9 as in this embodiment, the vacuum cleaner The axis of rotation of the main body toward the rear becomes unstable and swings from side to side, making it easy to change the orientation of the main body of the vacuum cleaner and making it difficult to tip over backwards. Furthermore, in the vacuum cleaner of this embodiment, the casters 9 are arranged to protrude outside the vacuum cleaner body 1, and the bumper 27 of the vacuum cleaner body 1 is configured to have the largest external dimension, so that it does not come into contact with obstacles. Even if the vacuum cleaner main body 1 side to which the hose 19 is attached is fixed, the lower wheel stand 10 can be rotated to avoid the problem. Furthermore, the roots of some of the protruding casters have a smooth shape and are connected to the outer periphery of the wheel platform 10, so that even if they hit an obstacle, they can slide and avoid it, and the placement of the caster 9 can be adjusted. Since it has four directions, it is configured to allow for smooth direction changes and crossing over thresholds. Further, according to this embodiment, since the electric blower 2 and the cord reel 4 are arranged at a low position, a structure with a low center of gravity can be adopted to prevent the vacuum cleaner from falling over, which is advantageous. Furthermore, the second part of the electric blower is attached to the wheel stand 1 from the outside.
Since part 0 covers the electric blower 2, the noise generated by the electric blower 2 has a double case structure with the lower case 1b and the case of the wheel stand 10, so the sound insulation effect is increased and the noise can be further reduced. Vacuum cleaner body 1 and wheel base 10
Since the shape is almost a perfect circle when viewed from above, it is possible to rotate with the minimum radius even when changing direction in a narrow area. In addition, in this embodiment, an exhaust port 28 is provided at the rear of the vacuum cleaner body 1.
However, a distributed exhaust port may be used to discharge the air from the entire circumference of the sliding portion 34 of the cleaner body 1 and the wheel stand 10.

〔Effect of the invention〕

According to the present invention, there is provided a vacuum cleaner main body that includes a built-in dust collection part that houses a filter and an electric blower, a wheel stand on which the vacuum cleaner main body is rotatably placed, and a wheel stand that protrudes outside of the wheel stand. In a vacuum cleaner equipped with a plurality of casters formed as shown in FIG.
Since the rotation of the vacuum cleaner body with respect to the wheel stand is suppressed at the positions aligned on the line, an electric remover that is difficult to fall backward and can run stably can be obtained.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a cross-sectional view of the main part, FIG. 2 is a perspective view of the overall appearance showing the cleaning state, FIG. 3 is an external view from the top of the vacuum cleaner body, and FIG. The figure is an explanatory diagram showing the state of obstacle avoidance, FIGS. 5 and 6 are schematic diagrams explaining the operation, FIG. 7 is a perspective view of the dust collection section, and FIG. 8 is an enlarged sectional view of the main part. DESCRIPTION OF SYMBOLS 1... Vacuum cleaner body, 2... Electric blower, 6... Dust collection part, 8... Casters, 9... Rotating shaft, 10...
Axle stand, 20...Hose attachment port, 25a, 25b...
・Stopper Figure 1 Figure 6 Figure 6

Claims (1)

[Claims] 1. A vacuum cleaner body that has a built-in dust collector and an electric blower that houses a filter, and has a hose attachment port formed on the front, and a vacuum cleaner that is concentric with the vacuum cleaner body and rotates within 360 degrees. In a vacuum cleaner consisting of a deep dish-shaped wheel stand that can be placed freely and a plurality of casters formed protruding from the outside of the wheel stand, at least one caster is positioned opposite to the hose attachment port on the vacuum cleaner body. A vacuum cleaner characterized in that a rotation stop mechanism is formed to stop rotation between the wheel base and the wheel base.